| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous pickling method where pickling productivity can be improved while suppressing the amount of a pickling liquid to evaporate from a pickling tank fed with an acid liquid by giving proper concentration set values respectively to steel strips in accordance with the pickling properties of steel strips which are different due to factors such as materials and scale thickness and controlling the concentration of the acid in the tank in accordance with the set value. SOLUTION: In the method for pickling steel strips, steel strips are subjected to pickling by being dipped into pickling liquids respectively stored in pickling tanks 2a to 2e in succession. In this process, the steel strips 1 are classified into two or more groups by their properties, and the set values of the temperature and/or acid concentration of the pickling liquids respectively stored in the pickling tanks 2a to 2e are prescribed in advance. When two or more kinds of steel strips 1 are subjected to pickling in succession, the temperature and/or acid concentration in the pickling liquids respectively stored in the pickling tanks 2a to 2e are controlled so as to conform with the set values for the respective steel strips 1, so that the steel strips 1 are pickled. COPYRIGHT: (C)2004,JPO&NCIPI
|
